Visiting the Monarch Sanctuary with Dr. Lincoln Brower
January 13, 2006 On this lovely sunny day, our first sight was of thousands of monarchs drinking water from a muddy area on the east side of the Llanos. Looking up, we saw a multitude of butterflies flying eastwards about 15 feet over the ground across the Llanos in search of places to drink. Westwards, the swarming monarchs were so thick that they formed a golden veil in front of the forest in the background from which they were emerging.
We soon realized that were two rivers of monarchs, one flying out of the colony towards a distant water source, and a second flying higher up and back into the colony. As we walked through the veil into the forest, we encountered the top of the colony at the head of the valley where water breaks out as a spring, known locally as the “Ojo de Agua." The boughs and trunks of hundreds of Oyamel firs and cedars were draped with curtains of monarchs resting quietly in the shade. The colony was moderately sized; it contained perhaps as many as 25 million monarchs and occupied about an acre of the trees. Try This! Print a copy of Dr. Brower's description. (Use this printer-friendly version.) Have students:
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